Year: 2014
Type: article
Abstract: We investigated two-photon absorption-based photoacoustic generation and compared it with corresponding photoluminescence emission. Experimental results revealed expected quadratic dependences on the incident optical fluence in both photoacoustic and photoluminescence processes. We also investigated the influence of optical scattering on the generation of two-photon photoacoustic and photoluminescence signals and found that photoacoustic signals attenuated more slowly than photoluminescence signals when the optical scattering coefficient was increased, which was attributed to a weaker ultrasonic attenuation than that the optical attenuation in the scattering medium. Finally, we showed three-dimensional two-photon photoacoustic imaging.
Source: Journal of Biomedical Optics
Institutions: Northwestern University, Texas A&M University
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Awards: G1268790672, G1972581785, G2674981899, Multimodal Retinal Functional Imaging for Diabetic Retinopathy, Collaborative Research in Biophotonics: Towards high-resolution, label-free molecular imaging in deep tissue via stimulated Raman excitation and ultrasound detection, G4439475616, CAREER: Functional imaging to prevent blindness, Collaborative Research in Biophotonics: Towards high-resolution, label-free molecular imaging in deep tissue via stimulated Raman excitation and ultrasound detection, G7873484468, G9000115067, G949422507
OpenAlex ID: W2077934603